We've got an unreleased Green Day studio jam that you may never have heard.

This little surprise was hidden away in a bonus chapter on ¡CUATRO!, the band's 2013 "rockumentary" movie that chronicled the recording process of the ¡UNO!, ¡DOS!, ¡TRÉ! trilogy albums. The song is unofficially titled "That Just Happened" after the scene that contained it.

It sounds like it was recorded live in the studio (probably all in one take as the whole band played together), but it was never fully mixed. Take a listen!



Some of the GDA team chatted about it recently, and we agreed that it sounds almost totally different than anything Green Day has ever released — it has a unique, laid-back kind of vibe. It would be amazing to hear Billie Joe write and sing lyrics over this! The melody has tons of feeling, and each different instrumental part complements the others in a way that's different than most other Green Day music. This one will probably never see the light of day beyond YouTube, but it's a refreshing taste of the kinds of song ideas the band throws around when they're in a studio together.

Should it have been fully recorded and released on the trilogy? Let us know what you think of this one in the comments!